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一、前言 热继电器、断路器和电机过载保护器的电器装置,是借电流直接通过热双金属片所产生的热能而动作的。为了简化设计,一般希望同一尺寸的电器,能控制不同的额定电流,这样就需要有不同比电阻的热双金属。例如美国ASTMB388—86标准中就列出了比电阻从0.16～1.41μΩ·m范围内各种不同比电阻值的热双金属。 我所早在六十年代初就列题对于以Cu作为中间层的比电阻为0.15μΩ·m三金属进行了研究,于一九六六年在制造工艺上解决了Cu层厚度均匀控制问题,获得了符合技术要求的产品,即后来冶标YB137—69中的
I. Introduction Thermal relay, circuit breakers and motor overload protector of the electrical device, is the current through the thermal bimetals directly generated by thermal energy and action. In order to simplify the design, generally hope that the same size appliances, can control different current rating, so you need to have different specific resistance thermal bimetal. For example, the United States ASTMB388-86 standard lists the specific resistance from 0.16 ~ 1.41μΩ · m range of different specific resistance thermal Bimetal. As early as the early 1960s, I made a study on the specific resistance of 0.15μΩ · m trimetallic with Cu as an intermediate layer. In 1966, we solved the problem of uniform control of Cu layer thickness in manufacturing process. Obtained in line with the technical requirements of the product, which is later YB137-69 standard